// 文本省略号
.text_overflow {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
// 居中flex
.flex_center {
  display: flex;
  justify-content: center;
  align-items: center;
}
// 左flex
.flex_left {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
// 右flex
.flex_right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}
// 两侧flex
.flex_between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
// 垂直flex
.flex_col {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
}